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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #include "content/common/gpu/gles2_texture_to_egl_image_translator.h" | |
6 | |
7 #include "base/logging.h" | |
8 | |
9 // Get EGL extension functions. | |
10 static PFNEGLCREATEIMAGEKHRPROC egl_create_image_khr = | |
11 reinterpret_cast<PFNEGLCREATEIMAGEKHRPROC>( | |
12 eglGetProcAddress("eglCreateImageKHR")); | |
13 static PFNEGLDESTROYIMAGEKHRPROC egl_destroy_image_khr = | |
14 reinterpret_cast<PFNEGLDESTROYIMAGEKHRPROC>( | |
15 eglGetProcAddress("eglDestroyImageKHR")); | |
16 | |
17 static bool AreEGLExtensionsInitialized() { | |
18 return (egl_create_image_khr && egl_destroy_image_khr); | |
19 } | |
20 | |
21 Gles2TextureToEglImageTranslator::Gles2TextureToEglImageTranslator( | |
22 Display* display, | |
23 int32 gles2_context_id) | |
24 : size_(320, 240), | |
25 egl_display_((EGLDisplay)0x1/*display*/), | |
26 egl_context_((EGLContext)0x368b8001/*gles2_context_id*/) { | |
27 // TODO(vhiremath@nvidia.com) | |
28 // Replace the above hard coded values with appropriate variables. | |
29 // size_/egl_display_/egl_context_. | |
30 // These should be initiated from the App. | |
31 if (!AreEGLExtensionsInitialized()) { | |
32 LOG(DFATAL) << "Failed to get EGL extensions"; | |
33 return; | |
34 } | |
35 } | |
36 | |
37 | |
38 Gles2TextureToEglImageTranslator::~Gles2TextureToEglImageTranslator() { | |
39 } | |
40 | |
41 EGLImageKHR Gles2TextureToEglImageTranslator::TranslateToEglImage( | |
42 uint32 texture) { | |
43 EGLint attrib = EGL_NONE; | |
44 if (!egl_create_image_khr) | |
45 return EGL_NO_IMAGE_KHR; | |
46 // Create an EGLImage | |
47 EGLImageKHR hEglImage = egl_create_image_khr( | |
48 egl_display_, | |
49 egl_context_, | |
50 EGL_GL_TEXTURE_2D_KHR, | |
51 reinterpret_cast<EGLClientBuffer>(texture), | |
52 &attrib); | |
53 return hEglImage; | |
54 } | |
55 | |
56 uint32 Gles2TextureToEglImageTranslator::TranslateToTexture( | |
57 EGLImageKHR egl_image) { | |
58 // TODO(vhiremath@nvidia.com) | |
59 // Fill in the appropriate implementation. | |
60 GLuint texture = 0; | |
61 NOTIMPLEMENTED(); | |
62 return texture; | |
63 } | |
64 | |
65 void Gles2TextureToEglImageTranslator::DestroyEglImage(EGLImageKHR egl_image) { | |
66 // Clients of this class will call this method for each EGLImage handle. | |
67 // Actual destroying of the handles is done here. | |
68 if (!egl_destroy_image_khr) { | |
69 LOG(ERROR) << "egl_destroy_image_khr failed"; | |
70 return; | |
71 } | |
72 egl_destroy_image_khr(egl_display_, egl_image); | |
73 } | |
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